Update Gradle to 8.13 (#1008)

Also:

* Replace usages of deprecated APIs
* Prevent `testStart*` tasks from writing to standard output

buildSrc/src/main/kotlin/pklGradlePluginTest.gradle.kts

@@ -23,7 +23,7 @@ tasks.addRule("Pattern: compatibilityTest[All|Releases|Latest|Candidate|Nightly|
 
   when (val taskNameSuffix = matchResult.groupValues[1]) {
     "All" ->
-      task("compatibilityTestAll") {
+      tasks.register("compatibilityTestAll") {
         dependsOn(
           "compatibilityTestReleases",
           "compatibilityTestCandidate",
@@ -32,7 +32,7 @@ tasks.addRule("Pattern: compatibilityTest[All|Releases|Latest|Candidate|Nightly|
       }
     // releases in configured range
     "Releases" ->
-      task("compatibilityTestReleases") {
+      tasks.register("compatibilityTestReleases") {
         val versionInfos = GradleVersionInfo.fetchReleases()
         val allVersions =
           versionInfos
@@ -49,7 +49,7 @@ tasks.addRule("Pattern: compatibilityTest[All|Releases|Latest|Candidate|Nightly|
       }
     // latest release (if not developing against latest)
     "Latest" ->
-      task("compatibilityTestLatest") {
+      tasks.register("compatibilityTestLatest") {
         val versionInfo = GradleVersionInfo.fetchCurrent()
         if (versionInfo.version == gradle.gradleVersion) {
           doLast {
@@ -64,7 +64,7 @@ tasks.addRule("Pattern: compatibilityTest[All|Releases|Latest|Candidate|Nightly|
       }
     // active release candidate (if any)
     "Candidate" ->
-      task("compatibilityTestCandidate") {
+      tasks.register("compatibilityTestCandidate") {
         val versionInfo = GradleVersionInfo.fetchRc()
         if (versionInfo?.activeRc == true) {
           dependsOn(createCompatibilityTestTask(versionInfo))
@@ -74,7 +74,7 @@ tasks.addRule("Pattern: compatibilityTest[All|Releases|Latest|Candidate|Nightly|
       }
     // latest nightly
     "Nightly" ->
-      task("compatibilityTestNightly") {
+      tasks.register("compatibilityTestNightly") {
         val versionInfo = GradleVersionInfo.fetchNightly()
         dependsOn(createCompatibilityTestTask(versionInfo))
       }

gradle/wrapper/gradle-wrapper.properties

@@ -1,7 +1,7 @@
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
-distributionSha256Sum=8d97a97984f6cbd2b85fe4c60a743440a347544bf18818048e611f5288d46c94
-distributionUrl=https\://services.gradle.org/distributions/gradle-8.12.1-bin.zip
+distributionSha256Sum=20f1b1176237254a6fc204d8434196fa11a4cfb387567519c61556e8710aed78
+distributionUrl=https\://services.gradle.org/distributions/gradle-8.13-bin.zip
 networkTimeout=10000
 validateDistributionUrl=true
 zipStoreBase=GRADLE_USER_HOME

gradlew

@@ -205,7 +205,7 @@ fi
 DEFAULT_JVM_OPTS='"-Xmx64m" "-Xms64m"'
 
 # Collect all arguments for the java command:
-#   * DEFAULT_JVM_OPTS, JAVA_OPTS, JAVA_OPTS, and optsEnvironmentVar are not allowed to contain shell fragments,
+#   * DEFAULT_JVM_OPTS, JAVA_OPTS, and optsEnvironmentVar are not allowed to contain shell fragments,
 #     and any embedded shellness will be escaped.
 #   * For example: A user cannot expect ${Hostname} to be expanded, as it is an environment variable and will be
 #     treated as '${Hostname}' itself on the command line.

pkl-cli/pkl-cli.gradle.kts

@@ -14,6 +14,7 @@
  * limitations under the License.
  */
 import java.io.ByteArrayOutputStream
+import java.io.OutputStream
 import org.gradle.kotlin.dsl.support.serviceOf
 
 plugins {
@@ -148,6 +149,7 @@ private fun setupJavaExecutableRun(
         null -> "java"
         else -> launcher.get().executablePath.asFile.absolutePath
       }
+    standardOutput = OutputStream.nullOutputStream()
 
     args("-jar", javaExecutable.get().outputs.files.singleFile.toString(), *args)
 

pkl-tools/pkl-tools.gradle.kts

@@ -13,6 +13,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
+import java.io.OutputStream
 import java.nio.charset.StandardCharsets
 import java.util.*
 import kotlin.io.path.createDirectories
@@ -77,6 +78,7 @@ private fun Exec.configureTestStartFatJar(launcher: Provider<JavaLauncher>) {
 
   inputs.files(tasks.shadowJar)
   executable = launcher.get().executablePath.asFile.absolutePath
+  standardOutput = OutputStream.nullOutputStream()
 
   argumentProviders.add(
     CommandLineArgumentProvider {